var headW = document.getElementsByClassName("headW")[0];
var theAmong = document.getElementsByClassName("among");
console.log(theAmong[0])
	//遍历
	theAmong[0].style.left = theAmong[0].offsetLeft - 320 + "px";
	theAmong[2].style.left = theAmong[2].offsetLeft - 290 + "px";
	
//headW.onclick = function() {
//	theAmong[0].style.left = theAmong[0].offsetLeft - 320 + "px";
//	theAmong[2].style.left = theAmong[2].offsetLeft - 290 + "px";
//
//}